Question
Fill in the Blank 3 points Identify the two numbers that multiply to 28 and add to -16 square and square
Solution
4.2
(249 Votos)
Victor
Mestre · Tutor por 5 anos
Resposta
To solve this, we need to find two numbers that multiply to 28 and add to -16.### Step 1: Set up the equationsLet the two numbers be
and
. Then:
### Step 2: Solve for one variableFrom the second equation, solve for
in terms of
:
### Step 3: Substitute into the first equationSubstitute
into
:
Simplify:
Rearrange into standard quadratic form:
### Step 4: Solve the quadratic equationUse the quadratic formula:
where
,
, and
.Substitute these values:
### Step 5: Find the two solutionsSolve for the two possible values of
:1.
,2.
.Thus, the two numbers are **-2** and **-14**.### Final Answer:The two numbers are **-2** and **-14**.